CN109028035A - A kind of gasification of biomass-combustion side coupling coal-burning boiler - Google Patents
A kind of gasification of biomass-combustion side coupling coal-burning boiler Download PDFInfo
- Publication number
- CN109028035A CN109028035A CN201811072316.6A CN201811072316A CN109028035A CN 109028035 A CN109028035 A CN 109028035A CN 201811072316 A CN201811072316 A CN 201811072316A CN 109028035 A CN109028035 A CN 109028035A
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- Prior art keywords
- gas
- coal
- burning boiler
- biomass
- gasification
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
- F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
- F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The present invention relates to coal-burning boiler and biomass gasifying furnace coupling technique field, specially gasification of biomass-combustion side couples coal-burning boiler, including gasification of biomass furnace body, and gasification of biomass furnace body is connect by gas pipeline with cyclone dust collectors；Cyclone dust collectors are connect by high temperature conduit with gas-gas heat exchanger, and the gas-gas heat exchanger other end is connect by gas pipeline with coal-burning boiler；The air outlet of gas-gas heat exchanger is connected to by air delivery duct with the secondary air duct of coal-burning boiler, the air inlet of gas-gas heat exchanger also passes through wind channel and is connected to the secondary air duct of coal-burning boiler, blower is provided on wind channel, the tail portion of coal-burning boiler is provided with air preheater, and air preheater is connected to by secondary air duct with coal-burning boiler burner hearth；The present invention proposes the heat of a more efficient, easy biomass cooling conveying, the cooling medium of high-temperature biomass gas is made of the Secondary Air of coal-burning boiler, the cooling heat of biological fuel gas is brought into the burner hearth of coal-burning boiler by Secondary Air.
Description
Technical field
The present invention relates to coal-burning boilers and biomass gasifying furnace coupling technique field more particularly to a kind of gasification of biomass-
Combustion side couples coal-burning boiler.
Background technique
The chemical heat energy and sensible heat of the gasification burning of biomass are input into coal-burning boiler burner hearth, and large coal-fired boiler is along journey
Each heating surface improves the absorption efficiency of the heat of biological fuel gas, and the heat of biological fuel gas is finally efficient by Large-scale fire-electricity unit
It is converted into electric energy, the flue gas after biological fuel gas burning is completed to purify by large coal-fired boiler tail flue gas purification system.
Existing biomass couples the technical solution of large-scale fossil-fired unit, the cooling transmission process of biological fuel gas
In, it needs to answer high-temperature fuel gas → conduction oil → coal unit working-medium water heat transfer process, system arrangement is more complex, and conduction oil
The equipment dangerous point that the presence of (combustibles) increases, needs to be arranged corresponding fire prevention measure.
Summary of the invention
The present invention overcomes above-mentioned the deficiencies in the prior art, provide a kind of gasification of biomass-coal-fired pot of combustion side coupling
Furnace.The present invention is by coupling biomass gasifying furnace with the combustion side of large electric power plant coal unit, by the chemistry of biological fuel gas
Thermal energy and sensible heat are input to the combustion side of coal-burning boiler；It is proposed the heat exchange side of a more efficient, easy biomass cooling conveying
Case makes the cooling medium of high-temperature biomass gas of the Secondary Air of coal-burning boiler, and the cooling heat of biological fuel gas is by Secondary Air
Bring the burner hearth of coal-burning boiler into.
Technical solution of the present invention:
A kind of gasification of biomass-combustion side coupling coal-burning boiler, including gasification of biomass furnace body, the biogas
Change furnace body to connect by gas pipeline with cyclone dust collectors；The cyclone dust collectors are connected by high temperature conduit and gas-gas heat exchanger
It connects, described gas-gas heat exchanger one end is connect by gas pipeline with coal-burning boiler；The air outlet of the gas-gas heat exchanger is by sending
Air duct is connected to the secondary air duct of the coal-burning boiler, and the air inlet of the gas-gas heat exchanger also passes through wind channel and the fire coal
The secondary air duct of boiler is connected to, and is provided with blower on the wind channel, and the tail portion of the coal-burning boiler is provided with air preheater,
The air preheater is connected to by the secondary air duct with the coal-burning boiler.
Further, valve is provided on the gas pipeline between gas-gas heat exchanger and coal-burning boiler.
Further, gas baffle is respectively provided with inside the wind channel and air delivery duct.
Further, the gasification of biomass furnace body side is respectively arranged with pressure fan and one group of feed hopper.
Further, the coal-burning boiler is internally provided with gas burner, and the gas burner passes through the combustion gas
Pipeline is connect with the gas-gas heat exchanger.
Further, the secondary air flow in the wind channel is less than the secondary air flow 20% in secondary air duct.
The present invention has the advantages that compared with the existing technology
The present invention is by coupling biomass gasifying furnace with the combustion side of large electric power plant coal unit, by biological fuel gas
Chemical heat energy and sensible heat fully enter the combustion side of coal-burning boiler；It proposes that a more efficient, easy biomass cools down to convey
Heat, be directly used as the cooling medium of high-temperature biomass gas with the Secondary Air of coal-burning boiler, biological fuel gas it is cold
But heat is brought into the burner hearth of coal-burning boiler by Secondary Air；
The chemical heat energy and sensible heat of the gasification burning of biomass of the present invention are all input into coal-burning boiler burner hearth, realize life
Gasification substance combustion gas is coupled in combustion side with coal-burning boiler completely.By being converted into electricity using Large-sized Coal-fired Power group equipment high efficiency
Can, realize that the high efficiency of energy of biomass utilizes
The hot Secondary Air of present invention coal-burning boiler does the scheme of the cooling medium of high-temperature biomass gas, and biomass is dropped
Temperature conveying, this programme technology can be realized, equipment is easier；
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
1- gasification of biomass furnace body in figure；2- gas pipeline；3- cyclone dust collectors；4- gas-gas heat exchanger；5- fire coal pot
Furnace；The air delivery duct 6-；7- wind channel；8- secondary air duct；9- air preheater；10- gas burner.
Specific embodiment
Below with reference to attached drawing, the present invention is described in detail.
As shown in connection with fig. 1, a kind of gasification of biomass-combustion side coupling coal-burning boiler disclosed in the present embodiment, including biology
Matter gasification furnace body 1, the gasification of biomass furnace body 1 are connect by gas pipeline 2 with cyclone dust collectors 3；Gasification of biomass
Furnace body 1 is conventional gasification of biomass furnace body, and biomass material is transported by hopper and pressure fan respectively with air
Gasification of biomass furnace body completes the pyrolytic gasification process of biomass, biomass gasifying furnace in biomass gasifying furnace body interior
The biological fuel gas temperature of the pyrolysis of ontology outlet is higher, and about 750 DEG C~800 DEG C, and have a certain amount of fly ash granule；It is high
Warm biological fuel gas is introduced in cyclone dust collectors via gas pipeline, and cyclone dust collectors can remove high-temperature biomass gas institute
The fly ash granule of carrying；The cyclone dust collectors 3 are connect by high temperature conduit with gas-gas heat exchanger 4, the gas-gas heat exchanger 4 one
End is connect by gas pipeline 2 with coal-burning boiler 5, and the air outlet of the gas-gas heat exchanger 4 passes through air delivery duct 6 and the coal-fired pot
The secondary air duct 8 of furnace 5 is connected to, and the air inlet of the gas-gas heat exchanger 4 also passes through the two of wind channel 7 and a coal-burning boiler 5
Secondary air duct 8 is connected to, and is provided with blower on the wind channel 7, the outlet side of the coal-burning boiler 5 is provided with air preheater 9, institute
Secondary air duct 8 is stated to be connected to across the air preheater 9 with the coal-burning boiler 5.
Specifically, being provided with valve on gas pipeline 2 between the gas-gas heat exchanger 4 and coal-burning boiler 5.
Specifically, being respectively provided with gas baffle inside the wind channel 7 and air delivery duct 6.
Specifically, 1 side of gasification of biomass furnace body is respectively arranged with pressure fan and one group of feed hopper.
Specifically, the coal-burning boiler 5 is internally provided with gas burner 10, the gas burner 10 passes through the combustion
Feed channel 2 is connect with the gas-gas heat exchanger 4.
Specifically, the secondary air flow in the wind channel 7 is less than the secondary air flow 20% in secondary air duct 8.
The course of work of the invention:
Gasification of biomass furnace body 1 is conventional gasification of biomass furnace body, and biomass material and air are respectively by hopper
It is transported into gasification of biomass furnace body with pressure fan, completes the pyrolytic gasification of biomass in biomass gasifying furnace body interior
The biological fuel gas temperature of process, the pyrolysis of gasification of biomass furnace body outlet is higher, and about 750 DEG C~800 DEG C, and have one
Quantitative fly ash granule.High-temperature biomass gas is introduced in cyclone dust collectors via gas pipeline, and cyclone dust collectors can take off
Except fly ash granule entrained by high-temperature biomass gas.
After cyclone dust collectors, high-temperature biomass gas is introduced in gas-gas heat exchanger, in gas-gas heat exchanger equipment,
The cooled cooling of high-temperature biomass gas, the precipitation temperature of part long-chain biological matter gasification tar as contained in biological fuel gas
Degree is lower than 350 DEG C, in order to prevent biomass fuel of the biomass coke tar in the condensation and blocking of heating surface, after finally controlling cooling
Temperature degree > 400 DEG C.
Another medium of gas-gas heat exchanger is the hot Secondary Air of coal-burning boiler, to exchange heat and take away biological fuel gas
Cool down sensible heat.The hot Secondary Air of coal-burning boiler air preheater outlet is done by the burner hearth that secondary air duct is introduced in coal-burning boiler
Combustion adjuvant participates in the burning of fuel, and the temperature of secondary hot-air is generally 320 DEG C~360 DEG C.Secondary air duct and gas-gas heat exchanger it
Between be provided with the conveying equipment of Secondary Air, portion's wind-heat Secondary Air in secondary air duct is introduced into gas-gas heat exchanger by wind channel, is passed through
Hot Secondary Air is rejoined in hot secondary air duct by air delivery duct after crossing heat exchange heating, is disposed with blower in wind channel, to
Pressure head is provided and overcomes the on-way resistance in the corresponding process of Secondary Air.
Secondary air flow in wind channel is less than the secondary air flow 20% in secondary air duct, due to passing through gas-gas heat exchanger
Secondary air flow be much larger than high-temperature biomass gas flow, can control the temperature rise of gas-gas heat exchanger inner second air less than 40
DEG C, the Secondary Air temperature rise in secondary air duct is converted after final mixing less than 10 DEG C.
After gas-gas heat exchanger, biological fuel gas is introduced into the gas burner of coal-burning boiler by gas pipeline, as combustion
The input fuel of coal burning boiler releases chemical heat energy in furnace chamber inner combustion.
Gas pipeline arranges valve, and gas baffle is arranged in wind channel and air delivery duct, after the stoppage in transit of gasification of biomass furnace body,
Being isolated for coupled system and coal-burning boiler may be implemented.
The technical program may be implemented the chemical heat energy of the gasification burning of biomass and sensible heat being all input into fire coal
Boiler furnace realizes that biomass gasification burning is coupled in combustion side with coal-burning boiler completely.Combustion in the burner hearth of coal-burning boiler
Side is burnt, it is the master of high temperature and pressure, reheated steam that the heating surface of coal-burning boiler ontology arrangement, which absorbs high-temperature flue gas converting heat, is passed through
Turbo-generator Set Efficient Conversion is electric energy, and the chemical heat energy that gasification burning may be implemented all is coupled with sensible heat reaches coal burning machine
Group thermal efficiency of cycle, currently, the Large-sized Coal-fired Power group thermal efficiency of cycle of mainstream it is general > 43%.
The prior art compared is done with the technical program, the cooling medium of high-temperature biomass gas is conduction oil, and
The sensible heat (> 400 DEG C of sensible heats) of high-temperature biomass gas is transported to low-pressure heating system by circulation, for heating
< 140 DEG C of boiler low pressure feed water substitutes part extracted steam from turbine (fourth stage or level V steam extraction), and the steam turbine substituted is taken out
Vapour continuation is done work in steam turbine, but since the energy level of the steam extraction (pressure, temperature) is lower, only calculates the following by substitution steam extraction
The ring thermal efficiency < 20%, the i.e. efficiency of heating- utilization of biological fuel gas sensible heat are only < 20%.
The comparison of above scheme, the chemical heat energy and sensible heat whole that biomass gasification burning may be implemented in the technical program are in fact
The thermal efficiency of cycle of existing coal unit.And the prior art compared is done, the sensible heat of high-temperature biomass gas (> 400 DEG C aobvious
Heat) energy utilization rate it is lower.The sensible heat (> 400 DEG C of sensible heats) of high-temperature biomass gas can generally achieve gasification burning
Chemical heat energy and sensible heat total amount > 10% share.
Above embodiments are exemplary description of this patent, do not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (6)
1. a kind of gasification of biomass-combustion side couples coal-burning boiler, it is characterised in that: including gasification of biomass furnace body (1),
The gasification of biomass furnace body (1) is connect by gas pipeline (2) with cyclone dust collectors (3)；The cyclone dust collectors (3) are logical
It crosses high temperature conduit to connect with gas-gas heat exchanger (4), gas-gas heat exchanger (4) other end passes through gas pipeline (2) and coal-fired pot
Furnace (5) connection；The air outlet of the gas-gas heat exchanger (4) passes through the secondary air duct of air delivery duct (6) and the coal-burning boiler (5)
(8) it is connected to, the air inlet of the gas-gas heat exchanger (4) also passes through the secondary air duct of wind channel (7) Yu a coal-burning boiler (5)
(8) it is connected to, is provided with blower on the wind channel (7), the tail portion of the coal-burning boiler (5) is provided with air preheater (9), institute
It states secondary air duct (8) and is connected to the air preheater (9) with the coal-burning boiler (5).
2. a kind of gasification of biomass according to claim 1-combustion side couples coal-burning boiler, which is characterized in that the institute
It states and is provided with valve on the gas pipeline (2) between gas-gas heat exchanger (4) and coal-burning boiler (5).
3. a kind of gasification of biomass according to claim 1-combustion side couples coal-burning boiler, which is characterized in that described to draw
Gas baffle is respectively provided with inside air duct (7) and air delivery duct (6).
4. a kind of gasification of biomass according to claim 1-combustion side couples coal-burning boiler, which is characterized in that the life
Gasification substance furnace body (1) side is respectively arranged with pressure fan and one group of feed hopper.
5. a kind of gasification of biomass according to claim 1-combustion side couples coal-burning boiler, which is characterized in that the combustion
Coal burning boiler (5) is internally provided with gas burner (10), the gas burner (10) by the gas pipeline (2) with it is described
Gas-gas heat exchanger (4) connection.
6. a kind of gasification of biomass according to claim 1-combustion side couples coal-burning boiler, which is characterized in that described to draw
Secondary air flow in air duct (7) is less than the secondary air flow 20% in secondary air duct (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811072316.6A CN109028035A (en) | 2018-09-12 | 2018-09-12 | A kind of gasification of biomass-combustion side coupling coal-burning boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811072316.6A CN109028035A (en) | 2018-09-12 | 2018-09-12 | A kind of gasification of biomass-combustion side coupling coal-burning boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110105986A (en) * | 2019-04-12 | 2019-08-09 | 湖北华电襄阳发电有限公司 | Biomass gasification device and coal unit coupled system and its electricity generation system |
| CN112251261A (en) * | 2020-10-15 | 2021-01-22 | 海泉风雷新能源发电股份有限公司 | Process method for preventing biomass gas pyroligneous liquor from being separated out |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889905A (en) * | 2016-05-23 | 2016-08-24 | 合肥德博生物能源科技有限公司 | Front biomass ultra-high-speed self-balancing gasifying co-combustion device and method for coal-fired boiler |
| CN106221816A (en) * | 2016-09-19 | 2016-12-14 | 北京中电联发科技有限公司 | The combustion gas of molding biomass combustion generation and the system and method for coal dust mixed power generation |
| CN108456556A (en) * | 2018-02-28 | 2018-08-28 | 上海锅炉厂有限公司 | A kind of gasification of biomass coupling coal-burning boiler electricity generation system and method |
| CN207793184U (en) * | 2018-01-26 | 2018-08-31 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of biomass coupling coal generating system |
| CN208794393U (en) * | 2018-09-12 | 2019-04-26 | 哈尔滨锅炉厂有限责任公司 | A kind of gasification of biomass-combustion side coupling coal-burning boiler |
-
2018
- 2018-09-12 CN CN201811072316.6A patent/CN109028035A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889905A (en) * | 2016-05-23 | 2016-08-24 | 合肥德博生物能源科技有限公司 | Front biomass ultra-high-speed self-balancing gasifying co-combustion device and method for coal-fired boiler |
| CN106221816A (en) * | 2016-09-19 | 2016-12-14 | 北京中电联发科技有限公司 | The combustion gas of molding biomass combustion generation and the system and method for coal dust mixed power generation |
| CN207793184U (en) * | 2018-01-26 | 2018-08-31 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of biomass coupling coal generating system |
| CN108456556A (en) * | 2018-02-28 | 2018-08-28 | 上海锅炉厂有限公司 | A kind of gasification of biomass coupling coal-burning boiler electricity generation system and method |
| CN208794393U (en) * | 2018-09-12 | 2019-04-26 | 哈尔滨锅炉厂有限责任公司 | A kind of gasification of biomass-combustion side coupling coal-burning boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110105986A (en) * | 2019-04-12 | 2019-08-09 | 湖北华电襄阳发电有限公司 | Biomass gasification device and coal unit coupled system and its electricity generation system |
| CN112251261A (en) * | 2020-10-15 | 2021-01-22 | 海泉风雷新能源发电股份有限公司 | Process method for preventing biomass gas pyroligneous liquor from being separated out |
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